0000950146-01-000037 SC 13G 1 20010214 AMERICAN PACIFIC CORP 0000350832 2810 596490478 DE 0930 SC 13G 34 005-33521 1543763 3770 HOWARD HUGHES PKWY STE 300 LAS VEGAS NV 89109 7027352200 3770 HOWARD HUGHES PKWY STE 300 3770 HOWARD HUGHES PKWY STE 300 LAS VEGAS NV 89109 STATE STREET RESEARCH & MANAGEMENT CO //MA/ 0000924355 133142135 DE 1231 SC 13G ONE FINANCIAL CENTER 30TH FLOOR BOSTON MA 02111 6173571200 ONE FINANCIAL CENTER 30TH FLOOR BOSTON MA 02111-2690 SC 13G 1 0001.txt